Management of long bone fractures and traumatic hip dislocations in paediatric patients: study protocol for a prospective global multicentre observational cohort registry oleh Alexander Joeris, Kishore Mulpuri, Bryn O Zomar, L Johnson, S K Gupta, D Little, K Mulpuri, P Schmittenbecher, Maio Chen, Emily K Schaeffer, ADB Buunaaim, S Imran Buckari, M Ajith Kumar, A Bosak Versic, A Konstantopoulou, I Aguado Maestro, M Stitzman Wengrowicz, S Carsen, U Narayanan, R El-Hawary, M J Malaret Baldo, M Sepulveda